Search results for "G.Anders"
showing 6 items of 6 documents
Level statistics and Anderson delocalization in two-dimensional granular materials
2020
Contrary to the theoretical predictions that all waves in two-dimensional disordered materials are localized, Anderson localization is observed only for sufficiently high frequencies in an isotropically jammed two-dimensional disordered granular packing of photoelastic disks. More specifically, we have performed an experiment in analyzing the level statistics of normal mode vibrations. We observe delocalized modes in the low-frequency boson-peak regime and localized modes in the high frequency regime with the crossover frequency just below the Debye frequency. We find that the level-distance distribution obeys Gaussian-Orthogonal-Ensemble (GOE) statistics, i.e. Wigner-Dyson distribution, in…
Nonadiabatic quantum search algorithms
2007
7 pages, 4 figures.-- PACS nrs.: 03.67.Lx, 05.45.Mt, 72.15.Rn.-- ISI Article Identifier: 000251326400049.-- ArXiv pre-print available at: http://arxiv.org/abs/0706.1139
Parametric self-trapping in the presence of randomized quasi phase matching
2010
We report on experimental evidence of parametric spatial solitons in a quadratic crystal with randomized periodic ferroelectric poling. Two-color self-focusing via quadratic cascading overcomes the diffractive nature of both fundamental and frequency-doubled beams.
Terror, escepticismo e individuo según Sloterdijk
2003
El análisis de Sloterdijk del terror contemporáneo se sitúa en una tradición pesimista que toma la guerra como modo de manifestación de rasgos de la época que van más allá de lo estrictamente bélico. Este pesimismo civilizatorio tiene pues una relación ambivalente con Ja guerra moderna. Por una parte, la guerra tal como se ha desarrollado, es fruto del progreso técnico científico, y por tanto, el producto de aquélla razón cartesiana que nos prometía se1• dueños y poseedores de la naturaleza. De manera que, una vez devorados con una voracidad imprevista por aquélla, esta tradición se instala en la desconfianza, pues más que ser dueños y poseedores de la naturaleza diríase que hemos sido expu…
Topological Protection and Control of Quantum Markovianity
2020
This article belongs to the Special Issue Topological Photonics.
Downregulation of alpha-galactosidase A upregulates CD77: functional impact for Fabry nephropathy.
2009
Anderson-Fabry disease, an inherited deficiency in the lysosomal enzyme alpha-galactosidase A, is characterized by the progressive accumulation of globotriaosylceramide (Gb3), also known as CD77. We sought to clarify the pathogenesis of Fabry disease by establishing a cell model of this disorder. The expression of alpha-galactosidase A was transiently silenced by RNA interference in HK2 and primary human renal epithelial cells and stably silenced in HK2 cells by retroviral transfection with small hairpin RNA. All of the silenced cells had histological similarities to cells of patients with Fabry disease. The cells had reduced viability, significant accumulation of intracellular Gb3, and a m…